Several people were forced out of a Sunterra Market location in Kensington on Thursday after carbon monoxide alarms went off.
According to the Calgary Fire Department, firefighters were called to the northwest building after an alarm tech in the building heard an alarm sounding in the basement, and upon investigating, found it to be a CO warning.
According to EMS, seven adults were send to hospital, three of them in serious condition, which spokesperson Stuart Brideaux said is very rare for a CO call.
The four others were in stable condition.
Fire crews at the scene found CO levels of 350 parts per million. Levels of 100 parts per million are dangerous for people if they’re in the area with the leak for longer than 15 minutes, the CFD said.
ATCO was called to the market to help ventilate the three-storey building.
Investigators believe the CO leak was caused by an issue with the furnace and ventilation system.
The CFD said the building’s management will be making the necessary repairs as soon as possible.
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